Rogue waves are actually a good example. They occur in places where there’s usually no recording equipment, and almost no one claims to have seen one. Yet numer

Rogue waves are actually a good example. They occur in places where there’s usually no recording equipment, and almost no one claims to have seen one. Yet numerous ones have been identified. Ball lightning supposedly occurs in places where there’s recording equipment everywhere, and people all over the place claim to have seen it. Yet we don’t have any evidence for it yet.